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A block of wood floats in water with ((4...

A block of wood floats in water with `((4)/(5))^(th)` of its volume submerged. In an oil, it floats with `((9)/(10))^(th)` volume submerged. The ratio of the density of oil and water is

A

`(8)/(9)`

B

`(9)/(8)`

C

`(19)/(25)`

D

`(25)/(18)`

Text Solution

Verified by Experts

`d_(w)Vg=(4)/(5)Vd_(w)g` ..(1)
`d_(w)Vg=(9)/(10)Vd_("oil")g` ..(2)
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